BE698804A - - Google Patents

Info

Publication number: BE698804A
Authority: BE; Belgium

Application number

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1966-05-21

Filing date

1967-05-22

Publication date

1967-11-22

1967-05-22 Application filed filed Critical

1967-11-22 Publication of BE698804A publication Critical patent/BE698804A/xx

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/573—Separation; Purification; Stabilisation; Use of additives

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Engineering & Computer Science (AREA)
Oil, Petroleum & Natural Gas (AREA)
Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

BE698804D 1966-05-21 1967-05-22 BE698804A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE1966B0087234 DE1266748C2 (en)	1966-05-21	1966-05-21	Process to prevent encrustation of heating surfaces during the continuous distillation of phthalic anhydride
DE1618136A DE1618136C3 (en)	1966-05-21	1967-04-15	Process for the purification of phthalic anhydride by distillation

Publications (1)

Publication Number	Publication Date
BE698804A true BE698804A (en)	1967-11-22

Family

ID=25967897

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE698804D BE698804A (en)	1966-05-21	1967-05-22

Country Status (7)

Country	Link
US (1)	US3420750A (en)
AT (1)	AT269850B (en)
BE (1)	BE698804A (en)
CH (1)	CH479523A (en)
DE (2)	DE1266748C2 (en)
GB (1)	GB1180117A (en)
NL (1)	NL6706981A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL6905713A (en) *	1968-04-13	1969-10-15
DE1814774B1 (en) *	1968-12-14	1969-12-04	Zieren Chemiebau Gmbh Dr A	Process for the production of pure phthalic anhydride
FR2224435B1 (en) *	1973-04-05	1976-11-12	Rhone Progil
US4397768A (en) *	1981-02-26	1983-08-09	Oxidaciones Organicas, C.A. "Oxidor"	Supported catalyst for the preparation of phthalic anhydride
DE3504146A1 (en) *	1985-02-07	1986-08-07	Basf Ag, 6700 Ludwigshafen	METHOD FOR OBTAINING HIGH PURITY MALEINIC ACID ANHYDRIDE FROM RAW MALEIC ACID ANHYDRIDE
DE19939629A1 (en) *	1999-08-20	2001-02-22	Basf Ag	Production of pure phthalic anhydride, e.g. for plasticizer production, involves distillation under reduced pressure in a column from which volatiles are taken off at the top and pure anhydride is taken off at a side arm

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR545132A (en) *	1920-11-05	1922-10-06		Machine for rolling cigarillos and other similar articles
NL46159C (en) *	1936-02-15
US2128323A (en) *	1937-04-15	1938-08-30	Solvay Process Co	Phthalic acid manufacture
GB795229A (en) *	1955-12-12	1958-05-21	Dominion Tar & Chemical Co	Improvements in or relating to phthalic anhydride
US3054729A (en) *	1958-11-28	1962-09-18	Arthur F Smith	Distillation film wiping apparatus
US3011955A (en) *	1959-06-04	1961-12-05	Scient Design Co	Purification of phthalic anhydride
BE592877A (en) *	1959-07-13
US3084110A (en) *	1959-12-23	1963-04-02	Phillips Petroleum Co	Method and apparatus for preventing stagnation near the reboiler of a distillation tower
DE1167810B (en) *	1960-11-12	1964-04-16	Basf Ag	Process for the production of pure phthalic anhydride
DE1227443B (en) *	1964-03-24	1966-10-27	Metallgesellschaft Ag	Process for the production of pure phthalic anhydride
FR1471085A (en) *	1965-05-04	1967-02-24	Metallgesellschaft Ag	Very high purity phthalic anhydride manufacturing process
US3289734A (en) *	1965-08-17	1966-12-06	Nalco Chemical Co	Scale deposition inhibition in black liquor multiple effect concentration processes using a styrene copolymer

1966
- 1966-05-21 DE DE1966B0087234 patent/DE1266748C2/en not_active Expired
1967
- 1967-04-15 DE DE1618136A patent/DE1618136C3/en not_active Expired
- 1967-05-12 CH CH673667A patent/CH479523A/en not_active IP Right Cessation
- 1967-05-19 NL NL6706981A patent/NL6706981A/xx unknown
- 1967-05-19 AT AT470967A patent/AT269850B/en active
- 1967-05-19 GB GB23398/67A patent/GB1180117A/en not_active Expired
- 1967-05-19 US US639829A patent/US3420750A/en not_active Expired - Lifetime
- 1967-05-22 BE BE698804D patent/BE698804A/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
DE1266748B (en)	1968-04-25
AT269850B (en)	1969-04-10
DE1618136B2 (en)	1977-01-27
CH479523A (en)	1969-10-15
GB1180117A (en)	1970-02-04
US3420750A (en)	1969-01-07
DE1266748C2 (en)	1973-07-19
DE1618136A1 (en)	1971-03-11
DE1618136C3 (en)	1983-04-07
NL6706981A (en)	1967-11-22

Publication	Publication Date	Title
AU5917865A (en)	1967-11-23
AU428063B2 (en)	1972-09-13
AU424443B2 (en)	1972-05-24
AU414526B2 (en)	1971-06-30
AU433222B2 (en)	1973-03-01
AU421822B2 (en)	1972-02-28
AU417216B2 (en)	1971-09-21
AU415165B1 (en)	1971-07-23
AU1144366A (en)	1968-04-26
AU6703465A (en)	1968-04-26
AU612166A (en)	1968-01-04
AU5895065A (en)	1967-11-09
AU1111066A (en)	1968-03-21
AU218666A (en)	1967-08-31
BE284991A (en)
BE597652A (en)
AU433620A (en)	1969-03-27
AU415780B2 (en)	1971-08-10
AU411645B2 (en)	1971-03-24
AU407778B2 (en)	1970-11-05
BE692278A (en)	1967-07-06
BE692764A (en)	1967-07-03
AU6852465A (en)	1968-05-09
AU855865A (en)	1968-01-25
AU92366A (en)	1968-07-18

Legal Events

Date	Code	Title	Description
1987-01-01	RE20	Patent expired	Owner name: BADISCHE ANILIN-& SODAFABRIK A.G. Effective date: 19870522

Date

Code

Title

Description

1987-01-01

RE20

Patent expired

Owner name: BADISCHE ANILIN-& SODAFABRIK A.G.

Effective date: 19870522